Dispensing valve



Get, 6, 1925. v1,556,149

H. l. KOPPELMAN DISPENSING VALVE Filed May 7, 1923 A I M3255: v l 17a/0h f Kappel/7262,@

Patented O ct. 6, 192:5.

rUNITED STATES vPA'rENrOFFICE.

HAROLD I. xoPRLMAN, or CHICAGO, ILLINOIS, AssIGNOR To U. s. SANITARY .SPECIALTIES CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS. l

DISPENSING VALVE.

Application led May 7,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Dispensing Valves, of which the following is a specification.

This invention relates to liquid dispensing A apparatus and pertains particularly to toilet devices designed for dispensing liquid soap in washrooms.

Heretofore it has been customary to dispense liquid soap from individual containers or from a pipe line supplying a plui ality of dispensing devices associated with dierent wash basins, which line is fed from a tank or reservoir usually located On the wall of the room in which the apparatus is installed. `It is ynow proposed to provide a complete system for supplying a considerable number of separate washrooms or lavatories situated von different floors of large buildings., such as olice lvbuildings and hotels, the entire .system being fed from a single large supply reservoir located at the top of the building. In the use or apparatus for dispensing liquid soap diliiculty has been experienced heretofore in avoiding leaking or clogging of the dispensing'valves, it having been the eX- perience that certain constructions which operate on sufficiently small clearances to afford leak-proof construction Were'subject to clogging from gummy deposits out of the soap, or from products of reactions occurring between the soap mixture and the metal or other material of which the, dispensing devices were'made. Becauseof. the constant and rather violent usage to which thel dispensingdevices are subjected they are sub- 40 ject to wear which tends to make them leaky, an undesirable condition which is further augmented, in pipe line systems, by the hydrostatic pressure under which the material is fed to the dispensing devices from the supply tank on the wall. It will be obvious, therefore, that the tremendous increase in this hydrostatic pressure which will result from placing the supply reservoir near the top of atall building, and piping the material therefrom to lavatories on the dierent floors, would subject the dispensing valves to such pressures as willtend to increase by many fold the possibilities and 1923. serial No. 637,072.

probabilities of leakage through the dispensing valves,

y The general purpose of the present invention is the provision of a valve construction designed primarily to meet the requirements imposed by conditions such as those enumerated above but which, of course', is not 60 limited in its utility or intended use to employment in extensive systems. More par- I ticularly, a purpose of the invention is the l provision of a dispensing valve which will ,operate easily to discharge a uniform quan- 65,

tity of liquid at each operation, which will not be subject to clogging by deposits or by foreign matter which may be introduced with .the liquid, and which will remain leakproof incident to hard usageor under high 79 pressure of' the dispensed liquid. A more specilic purpose :of the invention is the provision of a dispensing device in` which the operating parts are-quickly and'v readily accessible'for purposes of inspec- 75'Y tion, cleaning or repair, without requiring associated devices being put out of operation. v v L v Another objectlis the "provision1 of such a device wherein the portions which close the '50 outlet are relieved from the hydrostatic pres` sure maintained upon the liquid to be dispensed.l

A further object is the provision of a dekvice, of the sort described which is sub` 85 stantially fool-proof, inthat ,it cannot be disabled by petty tampering after it installed. f

A further object lis the provision ot a device of the sort specified which is positive 9 0 in operation s o as to insure the discharge `0r dispensing of an intended}quant1ty of liquid at jeach Operation.

y. vOther and further Objects of the invention will be pointed out hereinafter, indicated in the appended claims or obvious upon an understanding of the present disclosure.

For the purpose of the presentl applica;I l tion I have shown in xthe accompanylng drawing forming a part of this specica- 100,l A

tion, one form in which the invention ma be embodied, but it is to be understood that the same is here submitted for illustrative. purposefonly, and that it is not, to be accorded any interpretation such .as would 105 have the effect of limiting'what I purport invention.

' Insaid drawing,

Fig. 1 is a vlongitudinal sectional eleva-l `tion of the device showing the operating parts in normal position;

Fig. 2l is a similar v1ew showingl the plosition of the parts at the end of the operation by which the liquid is dispensed or Fig. e is a Similar iev'v Shwing-the positionzof the'parts at a time during the re# f plunger;L

turn to normal position, when thefdevice isl being supplied with a new charge for sub sequent Vejection;

Fig. 4 is a detail inthe nature of a longitudinal section of a portion of the piston lor readily understood'bry reference to this illustrative embodiment' in detail. By reference tothe drawing, let` it be understood that L thenumeral 1 designates a pipe constituting chamber 7 1nto the barrel..

' longitudinal reciprocation through a packmg gland 11, the barrel being provided withv a portion of a supply line leading from. a reservoir` containing the liquid'to be dis` lpensed, andthe numeralI 2 designates a su1t- `able connection to `saidfpipe in ther nature of an elbow or T affording a mounting ifor the dispensing device. The dispensing de-` purposes of convenience 1n manufacture and assembling, may be made in two parts, designated 4 and 5, and which I will term respectively the valve bushing and bar rel. Theseparts are joined in suitable fashion, as by the screw joint'6, so that theyv may be mounted together upon-the member 2. The valve4 bushing includes a longitudinal bore 7 which I willcall a valve chamber, and which communicates with av bore 8 of smaller section, which I will call the inlet' port.` The latter communicates Awith the bore of the barrel `5, forming a passage whereby liquid may flow from the valve At a suitable distance in front of the. inlet port 8, the barrel is A*provided with a laterally opening outlet portp9. The front' or outer end of the barrel 5J isclosed by a stem 10 mounted forV an internal flan e 12 against which the packing is seate and which forms a stop arranged for engagement with a, flange 14 on the stem to limit outward movement of the latter. On ,its outer end the stem 10 carries a button or head 15 whereby it may be manipulated by hand, and which vforms a stop limiting the inward movement of the Avice includesr a casing .portion which, for.'l

to secure by. Letters Patent, short of the stem. At its inner end the stem is bored true and most/comprehensive scope of the idgive the shank 17a (see Fig. 4) of the 'aord an axial socket 16 adapted to r`eplunger 17 The plunger is provided with fan annular flange 18 against which a iex- -ible cup washer 19 and an expansiblespring Washer 20 are clamped by a nut 21 which is screw seated on the shaft' of the plunger, The plunger shaft is provided with an axial bore 22 Awhich opens laterally through the ports 24.' Mounted for telescopic movement4 in thakbore 22 is a valve Stem 25, the diameter of which, however,@is substantially less y y than the diameter of the bore 22, so that ample space isaiforded about the stem for s passage of liquid into the bore. An extension coil spring 26, which preferably is secured at one end to the valve stem and at the other to the shaft of theplunger, is effective to support thel former upon the latter in-l substantially the relationship illusy trated in Fig. 4,-when the spring is normal.

Adjacent. its rearward extremity the valve stem 25 carries a valve 27, whichI will designate the confining valve, beyond which the valvestem continues as an extension 28.

The plunger' `return spring 29 encompasses the valve stem 25 and the spring 26,'.and is seated at its rearward end against the valve bushing 4 and at its'forward end against the nut 21, under compression, Aso that it is effective to retain the shank 17 a of the`plunger seated in the socket 16 of the stem, and the stem in its outer position with the flange 14 seated against the stop flange 12. In

such position, \it will be observed, the \outlet port 9 is covered by the cup Washer 19 and effectively closed against egress of material therethrough from the bore of the barrel. The fit between the shank 17a of the plunger and the socket 16 of the stem is preferably such that the stem may be -rotated without rotating the plunger, the latter being held in position by the frictional engagement of the cup washer a ainst the wall ofthe barrel, under thelyiel ing pressure of-the spring washer 20. With the parts in this position the extension 28 pro- 'jects into the inlet port 8, there being a suf-V ficient clearance between the surfaces of said parts to permit the ready flow of liquid through the port. A`With the plungerlinthisforwardposition, moreover, the lconfining valve 27 is spaced apart from the valvel from the valve chamber thereinto. The in# let valve 30 is normally retained in seated positionV by its spring 31 which, is confined at itsrearward end by a bushing 32v which the plunger, as illustrated in Figs. 2 and 3;

while upon such inward movement of the plunger to a certain extent, but not to its full extent, vthe confining valve 27 willv lseat at the inner end of the 4inlet port 8 and ef-y fectively close the-same .against passage of liquid from the barrel thereinto.

I will now describe the operation of the device. Let it be assumed that the pipe connections 1 and 2 are supplied with liquid to be dispensed, which is maintained under hydrostatic pressure, and that there is a quantity of such liquid in the bore of the barrel 5, placed there by a preceding operation of the device. The parts occupy the positions illustrated in Fig. 1. The operator places the base ofthe palm of the hand against the button. 15 with the fingers extending below the outlet port 9, and pushes inwardly, compressing the spring 29. Be-

fore the washer 19 uncovers the port 9, the,

confining valve 27 closes the port 8, thereby confining a charge of material in the bore of the barrel. the plunger compresses the valve spring 26, relative movement of the plunger and valve 27 being accommodated by the telescopic connection of said parts. Incident tosuch further inwardmovement of the plunger, the liquid is displaced from the bore of the barrel, through the channels 22 and 24, and

out the port 9, which, of course, is uncov' ered during the ejecting portion of the plunger movement. Meanwhile the inlet valve 30, prior to the seating of the confin- 45 ing valve 27, has been unseated and moved to the position illustrated in Fig. 2, which figure illustrates the positions ofthe parts at substantially the end of the inward or ejecting movement of the plunger. The head 15 then being released by the operator, the plungerl return spring 29 will become effective to move the plunger outwardly, first closing the outlet port 9, and then unseating the confm'ng valve 27 while the inlet valve 30 1s held unseated by the extension 28. During a portion ofthe outward movement lor thea plunger, therefore the barrel bore will be in communication with the valve chamber 7 by way of the inlet port 8, while the outlet port 9 will be closed by the cup washer 19, the parts occupying positions approximate to those illustrated in Fig. 3.

During the return movement of the plunger with the parts 1n this relationship,

viz, with the outlet port closed and the inlet ort open, a 'charge of liquid will enter` the ore A further inward movement of v of the vbarrel through the inlet port from the valve chamber 7, impelled by the hydro static pressure. Further outward movement of the plunger will permit the inlet valve 30 lto sea-t, thereby effectively cutting oli' the lthe parts which it houses. The inlet valve 30 prevents any escape of liquid upon such removal of the barrel, and after such removal, the entire plunger assembly may be removed from, the barrel by simply withdrawing it through the rearward opening, as permitted by the loose mounting of the shank portion 17a-in the socket of tthe stem.

A device of this construction operates easily and uniformly to dispense a measured charge upon the inward movement of the plunger While the hand of the operator is below the outlet port. It is free from leakage, because the outlet is effectively closed to prevent.l egress of the small charge retained in the barrel and the parts are free from the hydrostatic pressure in the supply lines. The o erating parts are not subject to clogging ecause the liquid is afforded free passage in the dispensing operation and there is no tendency to force it intocrevices between moving parts.

I claim:

1. In a liquid dispensing system, the combination with a supply line, of a dispensing device having an inlet port and an outlet port, a valve normally closing the inlet port against pressure from the supply line, means normally closing the outlet' port, and an operating member movable to open said valve while the outlet port is closed, to admit liquid from the supply line,.said operating member being operable to open the outlet port and to eject liquid therethrough.

2. A liquid dispensing device comprising a casing having an inlet port and an outlet port, a plunger operable in said casing to eject liquid vthrough theoutlet port, means operable by the plunger for closing the outlet port when the plunger is in normal position, a valve closing the inlet port when the plunger is. in normal position, a confining valve for closing the inlet port to prevent egress of liquid from the casing therethrough, and means operable by the plunger for opening and closing said valves while the outlet port .is closed.

3.- In a dlspensing device, the combination of a casing having an inlet port and an outlet port, a plunger operable in the casing to eject liquid through the outlet port, an inlet valve normally closing the inlet port, an outlet valve controlling the outlet port, said valves being movable independently and means operable by the plunger to open the inlet valve While` the outlet valve is closed. n

4. A liquid dispensing device comprising a casing having an 'inlet port and an outlet port, a plunger operable therein to eject liquid through the outlet port, an voutlet of liquid therethrough, a valve in the bushcombinatioma valvebushing arranged for attachment to a supply line, a barrel member demountably connected to the bush- 'ingeand having communication therewith through an4 inlet port, an inlet valve iii the bushing normally closing said inlet port,

Ameans Whereby'the inlet valve is maintained in normal position When the barrel is dismounted from the bushing, a valve in the barrel 'for closing the inlet port', a plunger C operable in the barrel to `eject liquid therefrom, and means; including the valve last mentioned, operable by the plunger for controlling the inlet valve.

6. A dispensing device comprising the combination of a valve bushing adapted for.

connection to a supply line, said bushingbe-v ing provided with a channel for the passage ing normally closing said channel, a barrel connected to the bushing for reception off.:

liquid from said channel, and demountable therefrom While said valve .is in normal position, a plunger operable in vsaidbarrel and cooperating With'the Walls thereof to eject lliquid therefrom, yand yielding means operable by said plunger for unseating said valve to admit liquid to the barrel.

7. In a dispensing device, the combination of a casing having an inlet port and an outlet port, a stem mounted for reciprocatory movement through one endrof the casing, a

plunger operable in said casing .by said stem for ejectingliquid throughtheoutlet port,

a valve normally closing the inlet port, Said valve being operable by said plunger to admit liquid through the inlet port, `and a spring for actuating said plunger and stem, said plunger being removable from the casing independently of the valve and stem.

n8. A dispensing device adapted for c'onnection to a supply line and comprising a casing having an inlet port and an outletl port, a plunger' operable in theicasingv to eject liquid through the outlet port, an inlet ,valve normally closing the inlet port to prevent passage of liquid' therethrough from the supplg7 line, a confining valve for closing 'the inlet'port to prevent passage ofliquid therethrough from the casing, an outlet valve controlling the outlet port', and means operable bythe plunger vto,hold each of said valves in open position.

In .testimony whereof I have hereunto signed my name.

HARoLDi.' KOPPELMAN. 

